babel/CHANGELOG.md

Changelog

Tags:

• [Breaking Change]
• [Spec Compliancy]
• [New Feature]
• [Bug Fix]
• [Documentation]
• [Internal]
• [Polish]

Note: Gaps between patch versions are faulty, broken or test releases.

See the Babel Changelog for the pre-6.8.0 version changelog.

6.8.4 (2016-07-06)

Bug Fixes

• Fix the location of params, when flow and default value used (#68) @danez

6.8.3 (2016-07-02)

Bug Fixes

• Fix performance regression introduced in 6.8.2 with conditionals (#63) @danez

6.8.2 (2016-06-24)

Bug Fixes

• Fix parse error with yielding jsx elements in generators function* it() { yield <a></a>; } (#31) @eldereal
• When cloning nodes do not clone its comments (#24) @danez
• Fix parse errors when using arrow functions with an spread element and return type (...props): void => {} (#10) @danez
• Fix leading comments added from previous node (#23) @danez
• Fix parse errors with flow's optional arguments (arg?) => {} (#19) @danez
• Support negative numeric type literals @kittens
• Remove line terminator restriction after await keyword @kittens
• Remove grouped type arrow restriction as it seems flow no longer has it @kittens
• Fix parse error with generic methods that have the name get or set class foo { get() {} } (#55) @vkurchatkin
• Fix parse error with arrow functions that have flow type parameter declarations <T>(x: T): T => x; (#54) @gabelevi

Documentation

• Document AST differences from ESTree (#41) @nene
• Move ast spec from babel/babel (#46) @hzoo

Internal

• Enable skipped tests (#16) @danez
• Add script to test latest version of babylon with babel (#21) @danez
• Upgrade test runner ava @kittens
• Add missing generate-identifier-regex script @kittens
• Rename parser context types @kittens
• Add node v6 to travis testing @hzoo
• Update to Unicode v9 (#45) @mathiasbynens

6.8.1 (2016-06-06)

New Feature

• Parse type parameter declarations with defaults like type Foo<T = string> = T

Bug Fixes

• Type parameter declarations need 1 or more type parameters.
• The existential type * is not a valid type parameter.
• The existential type * is a primary type

Spec Compliancy

• The param list for type parameter declarations now consists of TypeParameter nodes
• New TypeParameter AST Node (replaces using the Identifier node before)

interface TypeParameter <: Node {
  bound: TypeAnnotation;
  default: TypeAnnotation;
  name: string;
  variance: "plus" | "minus";
}

6.8.0 (2016-05-02)

New Feature

Parse Method Parameter Decorators (#12)

Method Parameter Decorators is now a TC39 stage 0 proposal.

Examples:

class Foo {
  constructor(@foo() x, @bar({ a: 123 }) @baz() y) {}
}

export default function func(@foo() x, @bar({ a: 123 }) @baz() y) {}

var obj = {
  method(@foo() x, @bar({ a: 123 }) @baz() y) {}
};

Parse for-await statements (w/ asyncGenerators plugin) (#17)

There is also a new node type, ForAwaitStatement.

Async generators and for-await are now a stage 2 proposal.

Example:

async function f() {
  for await (let x of y);
}